Division 4: Transportation and Exterior Applications

WELCOME to the homepage of CIE Division 4, one of the six Technical Divisions of the International Commission on Illumination (CIE). More information on the CIE can be found on the CIE Home Page.

Anybody interested to contribute to and participate in the technical work of the Division, which is carried out through its Technical Committees, is welcome to contact either the Division secretary, the Technical Committee chairperson or your country's National Committee of CIE for further information. Attendance of Division meetings (usually annual) is also open to anybody interested in this field.

Terms of Reference

To study and prepare guides for the design of exterior lighting and light signalling.

In April 2018 the CIE 2018 Topical Conference on Smart Lighting took place in Taipei, Chinese Taipei. The CIE Topical Conference series is the successor to the CIE Lighting Quality and Energy Efficiency Conference series,... more

In October 2017 CIE held its Midterm Meeting in Jeju, Republic of Korea. The meetingwas accompanied by a 3-days conference on the subject “Smarter Lighting for BetterLife”. In 5 invited presentations, 57 oral... more

This report is a revision and update of CIE 150:2003 Guide on the Limitation of the Effects of Obtrusive Light from Outdoor Lighting Installations. The purpose of this Guide is to help formulate guidelines for assessing the... more